| Title | Periodic perturbations of Hamiltonian systems |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Fonda, A, Garrione, M, Gidoni, P |
| Journal | Advances in Nonlinear Analysis |
| Volume | 5 |
| Pagination | 367–382 |
| Abstract | We prove existence and multiplicity results for periodic solutions of Hamiltonian systems, by the use of a higher dimensional version of the Poincaré–Birkhoff fixed point theorem. The first part of the paper deals with periodic perturbations of a completely integrable system, while in the second part we focus on some suitable global conditions, so to deal with weakly coupled systems. |
| DOI | 10.1515/anona-2015-0122 |
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